I could snuff you could snuff he could snuff we could snuff you could snuff they could snuff
Forma con V-ing
I could be snuffing you could be snuffing he could be snuffing we could be snuffing you could be snuffing they could be snuffing
Perfecto
I could have snuffed you could have snuffed he could have snuffed we could have snuffed you could have snuffed they could have snuffed
Perfecto con V-ing
I could have been snuffing you could have been snuffing he could have been snuffing we could have been snuffing you could have been snuffing they could have been snuffing
Negación
Forma simple
I couldn't snuff you couldn't snuff he couldn't snuff we couldn't snuff you couldn't snuff they couldn't snuff
Forma con V-ing
I couldn't be snuffing you couldn't be snuffing he couldn't be snuffing we couldn't be snuffing you couldn't be snuffing they couldn't be snuffing
Perfecto
I couldn't have snuffed you couldn't have snuffed he couldn't have snuffed we couldn't have snuffed you couldn't have snuffed they couldn't have snuffed
Perfecto con V-ing
I couldn't have been snuffing you couldn't have been snuffing he couldn't have been snuffing we couldn't have been snuffing you couldn't have been snuffing they couldn't have been snuffing
Forma interrogativa
Forma simple
could I snuff? could you snuff? could he snuff? could we snuff? could you snuff? could they snuff?
Forma con V-ing
could I be snuffing? could you be snuffing? could he be snuffing? could we be snuffing? could you be snuffing? could they be snuffing?
Perfecto
could I have snuffed? could you have snuffed? could he have snuffed? could we have snuffed? could you have snuffed? could they have snuffed?
Perfecto con V-ing
could I have been snuffing? could you have been snuffing? could he have been snuffing? could we have been snuffing? could you have been snuffing? could they have been snuffing?
Forma interro-negativa
Forma simple
couldn't I snuff? couldn't you snuff? couldn't he snuff? couldn't we snuff? couldn't you snuff? couldn't they snuff?
Forma con V-ing
couldn't I be snuffing? couldn't you be snuffing? couldn't he be snuffing? couldn't we be snuffing? couldn't you be snuffing? couldn't they be snuffing?
Perfecto
couldn't I have snuffed? couldn't you have snuffed? couldn't he have snuffed? couldn't we have snuffed? couldn't you have snuffed? couldn't they have snuffed?
Perfecto con V-ing
couldn't I have been snuffing? couldn't you have been snuffing? couldn't he have been snuffing? couldn't we have been snuffing? couldn't you have been snuffing? couldn't they have been snuffing?